STERILMATIC DIGITAL ELECTRIC STERILIZER PARTS AND SERVICE MANUAL

STERILMATIC DIGITAL ELECTRIC STERILIZER PARTS AND SERVICE MANUAL EFFECTIVE JULY 19, 2017 Superseding All Previous Parts Lists. The Company reserves the right to make substitution in the event that items specified are not available. ERRORS: Descriptive and/or typographic errors are subject to correction. MARKET FORGE Telephone: (802) 658-6600 Fax: (802) 860-3732 www.marketforge.com P/N 14-0414 Rev G

TABLE OF CONTENTS DOOR ASSEMBLY & ADJUSTMENT...3 FULCRUM AND DRAIN ASSEMBLY...5 MISCELLANEOUS COMPONENTS...6 TROUBLESHOOTING...7 ERROR CODES...8 ILLUSTRATED PARTS LIST...9 JULY 19, 2017 2 STM-ED & STM-EDX STERILIZERS

DOOR ASSEMBLY & ADJUSTMENT STERILMATIC DOOR ASSEMBLY The Door of the Sterilmatic has been engineered to establish a positive method of sealing the steam pressure within the sterilizing cylinder. As steam pressure builds up within the cylinder, the door seal will tend to become more positive. However, the door should be adjusted to make a good initial seal between the door gasket and the door opening without the added assistance of internal cylinder steam pressure with the simple action of securing the door handle down in a locked position, the door gasket should be sufficiently compressed against the door opening, all the way around to prevent any steam leakage from occurring. DOOR ADJUSTMENT The Door Adjustment is Located in the Fulcrum Casting at the base of the door opening. This adjustment employs the use of a screw and locknut in order to adjust the Sterilmatic Door to a tighter closed position (to prevent steam from leaking by the door gasket as pressure builds up), it is necessary to loosen the locknut and back off the screw at least one-quarter of a turn and re-tighten the locknut. Figure 1 Figure 2 THE DOOR GASKET Keep the gasket clean. With normal closing and locking of the door assembly, a steam-tight seal should be made between the door gasket and the door opening. This seal cannot be maintained if particles of foreign matter are allowed to accumulate upon either of the contacting surfaces. If there is leakage by the door gasket before a steam build-up within the steam chamber and leakage does not stop when the sterilizer reaches sterilizing temperature and pressure than regard the door assembly as improperly adjusted. A re-adjustment must then be made of the seal adjustment door screw. To change the door gasket, remove the entire door assembly as a unit. Discard the old gasket, replace it with a new one (no cement is required), and reinstall the door assembly. Make an operational check for leakage and adjust the door, if necessary. JULY 19, 2017 3 STM-ED & STM-EDX STERILIZERS

DOOR ASSEMBLY & ADJUSTMENT DOOR LIFT SPRING Market Forge supplies door lift springs in sets only. This policy has been found to be in the best interest of the customer. Through continuous use, some of the original qualities of the springs are lost and it becomes advantageous to make replacements to both the left and right door lift springs in the event that one becomes damaged or broken. Replacement door lift springs are marked with tabs at the factory prior to shipment to identify a right from a left spring. These springs must be installed with the right door lift spring on the right of the door and the left door lift spring on the left of the door as viewed from the front of the sterilizer. TO REMOVE THE DOOR ASSEMBLY The Door Assembly can be removed from the inner sterilizing chamber as a unit without the use of any special tools or equipment. However, a systematic approach to this is warranted as the clearances through the portal are close, and much confusion can result if not removed in the sequence described below: 1. First, lift off and remove the two pan supports to expose the door linkage on either side of the inner sterilizing chamber. 2. Raise the door to a fully opened position, and disengage the door spring from each of the door spring studs. Accomplish this by counteracting the force of the door lift spring with one hand while working the end of the door spring off the spring stud with the free hand. Do this on both sides of the door assembly. 3. When the end of the door springs have been completely freed from their respective door spring studs, the door springs on either side of the door assembly can easily be slipped off their studs. 4. Rotate the entire door assembly out through the door opening, passing the door handle through the opening first, and then one end of the door spring as shown in the illustration. The remainder of the door assembly will then pass through the door opening quite easily. 5. To replace the door assembly, reverse the step-bystep procedure described above. Figure 3 ITEM PART NO. DESCRIPTION 1 10-6765 Pivot Spring Bearing 2 91-2718 Right and Left Door Spring (sold as a pair) 3 10-1776 10-32 Machine Screw 1/2 Long 4 10-2666 Door Gasket ITEM PART NO. DESCRIPTION 5 95-3204 Door & Door Spring Assembly - 95-0124 Items 1 through 5-10-1937 Pan Support Stud - 10-1939 Door Lift Spring Stud JULY 19, 2017 4 STM-ED & STM-EDX STERILIZERS

THE FULCRUM & DRAIN ASSEMBLY The fulcrum and drain assembly is located at the lower front of the sterilizing chamber and furnishes a sturdy anchorage for the door locking system of the door handle. Also provided in this assembly is a means for adjustment of the door seal. The drain port and drain valve provide a means of discharging accumulations of water from within the sterilizing chamber ROLLER ASSEMBLY (ITEMS 8 & 9) The Roller Assembly must be kept free-rolling at all times. Should this assembly be allowed to become frozen due to lack of lubrication, undue strain will be put on the door handle and the fulcrum casting while the door is being locked. Use only a dry lubricant such as graphite; as oil or grease will tend to attract dirt to this area. FULCRUM AND DRAIN ASSEMBLY Figure 4 ITEM PART NO. DESCRIPTION 1 10-3116 1/4-20 X 5/8 helicoil 2 10-1999 10-32 Machine screw, 1 5/8 long 3 10-2358 1/4-20 fulcrum nut 4 10-2087 1/4-20 allen set screw 5 10-3111 1/4-20x 3/8 helicoil 6 10-2513 1/4 Shakeproof washer 7 10-1763 1/4-20 Machine screw 3/4 long 8 95-0120 Bearing spacer 9 95-0198 Bronze Bearing 10 10-3111 1/4-20 x 3/8 helicoil 11 10-2513 1/4 Shakeproof washer 12 10-1790 1/4-20 Cap screw 7/8 long ITEM PART NO. DESCRIPTION 13 10-4485 Drain valve knob 14 10-2514 #10 Shakeproof lockwasher 15 10-2318 10-32 acorn nut 16 95-2643 Adapter - steinball valve 17 10-1950 6-32 Round head screw 1 5/8 long 18 98-4372 Front outer case lower 19 95-3850 Fulcrum and drain casting 20 10-1049 21 10-1041 Ball valve stein - 95-3992 Nipple 1/2 IPS 2 1/4 long stainless steel Fulcrum and drain assembly, Items 1 through 12, 14, 15, and 19 JULY 19, 2017 5 STM-ED & STM-EDX STERILIZERS

MISCELLANEOUS COMPONENTS CAST-IN HEATING ELEMENTS: Located under the sterilizing cylinder is a bank of (3) U- shaped heating elements. These elements are welded in place in a protective aluminum shield. The elements cannot be removed, and in the unlikely event that one or all fail, the complete cylinder must be replaced. THE LOW WATER CUT-OFF (MANUAL RESET): Fastened to a special mounting brace behind the front panel, the Low Water Cut-Off acts to shut off the complete unit, should the water run dry. The Low Water Cut Off is factory set, to shut the unit off when the cylinder temperature rises between 380 and 440 Fahrenheit. When the Sterilmatic is turned on without water or the water has been evaporated away, the temperature of the aluminum sterilizing cylinder will rise and by heat induction effect the Low Water Cut-Off. Its inner electrical contacts will be forced open from heat expansion, thus cutting off the flow of electric current to the heating elements. With the replacement of water into the cylinder the cylinder temperature will drop and the contacts of the Low Water Cut-Off can be again closed. The unit will only restart after the manual button has been re-set. THE SAFETY VALVE The Safety Valve is factory set to automatically open and exhaust excess steam from within the sterilizing cylinder, thereby assuring that operating pressures remain within safe limits. The lever action of the safety valve must be free to operate unrestricted at all times. If the Safety Valve should leak continually with a pressure build-up or should it cause an interruption on a sterilizing cycle prematurely (below 124 Centigrade on the temperature gauge), it must be replaced. THE FLUE The Flue serves as a protective shield for the safety valve, exhaust valve, and electrical components as well as a mounting base for the control panel. The Flue cover may be removed to allow more room for servicing the control components. THE EXHAUST SOLENOID VALVE The exhaust solenoid is normally closed. It opens at the start of heating cycle to allow cold air to escape the chamber. It closes when chamber temperature reaches 209 F (98 C). It also opens during a FAST VENT cycle. Figure 5 JULY 19, 2017 6 STM-ED & STM-EDX STERILIZERS

TROUBLESHOOTING TROUBLE POSSIBLE CAUSE CORRECTION Sterilizer fails to operate at all (no pressure build up). 1. Not installed correctly. 2. Blown fuse. 3. Contactor burned out. 4. Wiring is defective. 1. Check wire diagram for correct hook up. 2. Replace fuse. If it blows, check that source of electric supply is 60 amps. 3. Replace. 4. Check all wiring. Repair or replace. Sterilizer operates, but fails to build up 15.5 PSI pressure. 1. Current not heating all of the elements. 2. Exhaust valve fails to hold pressure at 15.5 PSI. 3. Steam leaks around door. 4. Safety valve blows-off prematurely. 1. Remove lower front panel and see if the heating elements are working.. 2. Replace exhaust valve. 3. Check for worn gasket or make door adjustment. 4. Replace safety valve. Unit releases pressure before cycle has terminated on timer. 1. Low water cut-off has functioned prematurely. 1. Replace low water cut-off. Left and/or right side(s) heating element(s) remain on during TIM- ING/STERILIZATION cycle. 1. Contactors of the temperature control switch remains closed. 1. Replace switches. JULY 19, 2017 7 STM-ED & STM-EDX STERILIZERS

ERROR CODES When an error occurs such as a low water condition, an error number will be displayed on the digital LCD display. Following is a list of the error numbers and their descriptions; ERR 01 Factory calibration corrupted. Must perform factory calibration. This would typically be done initially at the factory only ERR 02 User setup data corrupted, user setup will be reset to defaults on any key press ERR 04 Thermistor probe over max temperature limit of 350 F (177 C) ERR 05 PCB ambient sensor senses temperature above limit of 115 F (46.1 C) ERR 06 Low water warning. Water must be added then hit the RE- SET button. ERR 03 Thermistors probe input open. This indicates one of three conditions; 1. The user did not set a temperature before starting a cycle 2. One or more probe wires are not connected 3. The probe has failed and should be replaced Once the problem has been resolved any key press will clear the error and stop the buzzer JULY 19, 2017 8 STM-ED & STM-EDX STERILIZERS

ILLUSTRATED PARTS LIST 1 2 3 4 20 5 6 7 9 15 22 14 12 11 10 16 8 21 19 18 13 17 Vent Piping View ITEM PART NO. DESCRIPTION QTY 1 10-0938 Exhaust Solenoid Valve, 220/240 Volts 1 2 95-3730 90 Street Elbow, Brass, ½ IPS, (reworked) 1 3 10-7942 Safety Valve, 17 lbs 1 4 14-0175 Heat Sink 1 5 10-2863 90 Street Elbow, Brass, 1/2 NPT 1 6 10-3327 1/2 IPS Plug, Square Head, Brass 1 7 14-0671 Temperature Probe Kit, w/fitting 1 8 15-7212 Hose, S/S, 9 Length 1 9 10-3945 Hose Clamp 2 10 95-6319 Compression Fitting, 1/8-27 NPT, Brass (Drilled out orifice with 0.0625 bit) 1 11 14-3323 1/4 NPT- 1/8 FPT Bushing, Brass 1 12 10-3741 3/8 1/4 Hex Bushing 1 13 10-1054 3/8 IPS Elbow, Brass 2 14 10-1056 1/2-1/2-3/8, Tee, Brass 1 15 08-5007 1/2-1/8 NPT Reducer Bushing, Brass 1 16 10-3352 1/2 NPT Tee, Brass 1 *17 08-4999 1/4 NPT Plug, Brass 1 18 10-3644 3/8 IPS Plug, Square Head, Brass 1 19 10-1055 3/8 3/8 3/8 FPT Tee, Brass 1 20 95-3216 5/8 OD Copper Tubing, Soft, 9 Length 1 21 10-7987 3/8 IPS Close Nipple 1 22 10-1057 3/8 IPS Straight Union, Brass 1 * Reserved for secondary temperature probe used only for testing calibration of autoclave. JULY 19, 2017 9 STM-ED & STM-EDX STERILIZERS

ILLUSTRATED PARTS LIST 2 1 Electrical Components, Open Top View, Rear 7 6 8 5 9 4 10 11 3 12 1 Electrical Components, Open Top View, Front ITEM PART NO. DESCRIPTION QTY 1 09-6484 Contactor, 240V, 75 Amp 1 2 14-0176 Solid State Relay, 50 Amp 1 3 14-0177 Contactor, 2 Pole 3 4 14-0174 Axial Fan, 230V 1 5 14-0149 Printer 1 6 14-0161 Controller Board 1 7 14-0472 Low Water LED 1 8 10-5990 Low Water Cutoff 1 9 14-0162 Power Switch 1 10 14-0181 Power Supply 1 11 14-0180 Fuse, Slo-Blo 1 12 14-0178 Fuse Holder 1 JULY 19, 2017 10 STM-ED & STM-EDX STERILIZERS

ILLUSTRATED PARTS LIST ITEM ALL MODELS QTY. PART NO. DESCRIPTION 1 1 95-6236 Flue Cover Assy. 2 1 Flue Outer Case Wrap 3 1 95-2650 Upper Case, Front 4A 1 98-4372 Lower Case, Front w/cutout 4B 1 98-4373 Lower Case, Front Access Panel 5 1 10-6363 Insulation, Body 6 1 10-6365 Insulation, Back 7 1 10-6364 Insulation, Bottom 8 1 95-0465 Bottom Cover for Elements 9 1 98-4217 Cylinder, 208V - 240V (Shown with Door Assy.) 10 10-5938 Plate, Drain Panel Clean Instr JULY 19, 2017 11 STM-ED & STM-EDX STERILIZERS

ILLUSTRATED PARTS LIST ITEM ALL MODELS QTY. PART NO. DESCRIPTION 1 1 95-3196 Outside Case, Left Side 2 1 95-3195 Outside Case, Right Side 3 1 95-3194 Outside Case, Back 4 1 10-0226 Handle Bumper 5 1 95-3484 Terminal Box Cover 6 2 95-2545 Pan Rack, 1 Left & 1 Right 7 1 95-2637 Condensate Baffle, Upper 8 1 95-3207 Perforated Water (Splash) Baffle 9 4 95-3284 Wear Strip JULY 19, 2017 12 STM-ED & STM-EDX STERILIZERS

ILLUSTRATED PARTS LIST 14 15 10 9 11 12 13 3 8 4 2 1 5 7 6 Door Handle Assembly 16 JULY 19, 2017 13 STM-ED & STM-EDX STERILIZERS

ILLUSTRATED PARTS LIST DOOR HANDLE ASSEMBLY ITEM PART NO. DESCRIPTION 1 10-2318 10-32 Acorn Nut 2 10-2514 #10 Shakeproof Lockwasher 3 95-0571 10-32 Machine Screw 1 3/8 Lg. 4 95-0120 Bearing Spacer 5 95-0136 Door Lock Casting 6 10-2517 3/8 Shakeproof Lockwasher 7 10-0050 Door Lock Knob 8 95-0134 Door Handle Casting 9 10-2359 1/4-20 Acorn Nut 10 95-0658 Door Handle Bearing Stud 11 14-0721 Door Handle Bearing Plate 12 10-2513 1/4 Shakeproof Lockwasher 13 10-1731 1/4-20 Machine Screw 5/8 Lg. 14 95-0190 Door Lock Casting Assy. (Items 1 through 6) 15 95-0145 Door Lock Knob Assy. (Items 1 through 7) 16 95-0144 Complete Door Handle Assy. (Items 1 through 13) 17 95-0198 Handle Bushing (Not Shown) JULY 19, 2017 14 STM-ED & STM-EDX STERILIZERS